/*
 * BEEM is a videoconference application on the Android Platform.
 * Copyright (C) 2009 by Frederic-Charles Barthelery,
 * Jean-Manuel Da Silva,
 * Nikita Kozlov,
 * Philippe Lago,
 * Jean Baptiste Vergely,
 * Vincent Veronis.
 * This file is part of BEEM.
 * BEEM is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 * BEEM is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU General Public License for more details.
 * You should have received a copy of the GNU General Public License
 * along with BEEM. If not, see <http://www.gnu.org/licenses/>.
 * Please send bug reports with examples or suggestions to
 * contact@beem-project.com or http://dev.beem-project.com/
 * Epitech, hereby disclaims all copyright interest in the program "Beem"
 * written by Frederic-Charles Barthelery,
 * Jean-Manuel Da Silva,
 * Nikita Kozlov,
 * Philippe Lago,
 * Jean Baptiste Vergely,
 * Vincent Veronis.
 * Nicolas Sadirac, November 26, 2009
 * President of Epitech.
 * Flavien Astraud, November 26, 2009
 * Head of the EIP Laboratory.
 */
package com.beem.project.beem.utils;

import org.jivesoftware.smack.packet.Presence;

/**
 * Utility class to deal with Presence type.
 * 
 * @author nikita
 */
public final class PresenceType {

	/** The user is available to receive messages (default). */
	public static final int AVAILABLE = 100;

	/** The user is unavailable to receive messages. */
	public static final int UNAVAILABLE = 200;

	/** Request subscription to recipient's presence. */

	public static final int SUBSCRIBE = 300;

	/** Grant subscription to sender's presence. */
	public static final int SUBSCRIBED = 400;

	/** Request removal of subscription to sender's presence. */
	public static final int UNSUBSCRIBE = 500;

	/** Grant removal of subscription to sender's presence. */
	public static final int UNSUBSCRIBED = 600;

	/** The presence packet contains an error message. */
	public static final int ERROR = 701;

	/**
	 * Private default constructor.
	 */
	private PresenceType() {}

	/**
	 * Get the presence type from a presence packet.
	 * 
	 * @param presence
	 *            the presence type
	 * @return an int representing the presence type
	 */
	public static int getPresenceType(final Presence presence) {
		int res = PresenceType.ERROR;
		switch (presence.getType()) {
		case available:
			res = PresenceType.AVAILABLE;
			break;
		case unavailable:
			res = PresenceType.UNAVAILABLE;
			break;
		case subscribe:
			res = PresenceType.SUBSCRIBE;
			break;
		case subscribed:
			res = PresenceType.SUBSCRIBED;
			break;
		case unsubscribe:
			res = PresenceType.UNSUBSCRIBE;
			break;
		case unsubscribed:
			res = PresenceType.UNSUBSCRIBED;
			break;
		case error:
		default:
			res = PresenceType.ERROR;
		}
		return res;
	}

	/**
	 * Get the smack presence mode for a status.
	 * 
	 * @param type
	 *            the status type in beem
	 * @return the presence mode to use in presence packet or null if there is no mode to use
	 */
	public static Presence.Type getPresenceTypeFrom(final int type) {
		Presence.Type res;
		switch (type) {
		case AVAILABLE:
			res = Presence.Type.available;
			break;
		case UNAVAILABLE:
			res = Presence.Type.unavailable;
			break;
		case SUBSCRIBE:
			res = Presence.Type.subscribe;
			break;
		case SUBSCRIBED:
			res = Presence.Type.subscribed;
			break;
		case UNSUBSCRIBE:
			res = Presence.Type.unsubscribe;
			break;
		case UNSUBSCRIBED:
			res = Presence.Type.unsubscribed;
			break;
		case ERROR:
			res = Presence.Type.error;
			break;
		default:
			return null;
		}
		return res;
	}
}
